FLT-MB-T1-264/25-3+1-UT
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Type 1+2+3 combined lightning current and surge arresters
1461303
Compact, non-pluggable lightning current/surge arrester free of leakage current based on wear-free carbon spark gap technology for 3-phase power supply networks with separate N and PE (5-conductor system: L1, L2, L3, N, PE), suitable for use in the unmetered area, discharge capacity of up to 100 kA for lightning protection levels I and II.
Product details
| Product type | Combination type |
| IEC test classification | I + II + III |
| T1 + T2 + T3 | |
| EN type | T1 + T2 + T3 |
| IEC power supply system | TN-S |
| TT | |
| Type | DIN rail module, one-piece |
| Surge protection fault message | optical |
| Insulation characteristics | |
| Overvoltage category | IV |
| Pollution degree | 2 |
| Nominal frequency fN | 50 Hz (60 Hz) |
| Connection method | Screw connection |
| Screw thread | M5 |
| Tightening torque | 3 Nm (2,5 mm² ... 16 mm²) |
| 4.5 Nm (25 mm² ... 35 mm²) | |
| Stripping length | 18 mm |
| Conductor cross-section flexible | 2.5 mm² ... 25 mm² |
| Conductor cross-section rigid | 2.5 mm² ... 35 mm² |
| Conductor cross-section AWG | 13 ... 2 |
| Connection method | Fork-type cable lug |
| Conductor cross-section flexible | 2.5 mm² ... 25 mm² |
| Dimensional drawing |
|
| Width | 72 mm |
| Height | 89.8 mm |
| Depth | 76.6 mm (incl. DIN rail 7.5 mm) |
| Horizontal pitch | 4 Div. |
| Color | light gray (RAL 7035) |
| Flammability rating according to UL 94 | V-0 |
| CTI value of material | 600 |
| Insulating material | PBT |
| Material group | I |
| Housing material | PBT |
| Mechanical data | |
| Open side panel | No |
| Mode of protection | L-N |
| L-PE | |
| N-PE | |
| Nominal voltage UN | 240/415 V AC (TN-S) |
| 240/415 V AC (TT) | |
| Nominal frequency fN | 50 Hz (60 Hz) |
| Maximum continuous operating voltage UC | 264 V AC |
| Rated load current IL | 80 A (< 55 °C) |
| Protective conductor current IPE | ≤ 0.01 mA |
| Nominal discharge current In (8/20) µs (L-N) | 25 kA |
| Nominal discharge current In (8/20) µs (L-PE) | 25 kA |
| Nominal discharge current In (8/20) µs (N-PE) | 100 kA |
| Combination wave UOC | 6 kV |
| Impulse discharge current (10/350) µs (L-N), charge | 12.5 As |
| Impulse discharge current (10/350) µs (L-N), specific energy | 156 kJ/Ω |
| Impulse discharge current (10/350) µs (L-N), peak current value Iimp | 25 kA |
| Impulse discharge current (10/350) µs (L-PE), charge | 12.5 As |
| Impulse discharge current (10/350) µs (L-PE), specific energy | 156 kJ/Ω |
| Impulse discharge current (10/350) µs (L-PE), peak current value Iimp | 25 kA |
| Impulse discharge current (10/350) µs (N-PE), charge | 50 As |
| Impulse discharge current (10/350) µs (N-PE), specific energy | 2500 kJ/Ω |
| Impulse discharge current (10/350) µs (N-PE), peak current value Iimp | 100 kA |
| Total discharge current ITotal (10/350) µs | 100 kA |
| Follow current quenching capacity Ifi (L-N) | 50 kA |
| Follow current interrupt rating Ifi (N-PE) | 100 A |
| Short-circuit current rating ISCCR | 50 kA |
| Voltage protection level Up (L-N) | ≤ 1.5 kV |
| Voltage protection level Up (L-PE) | ≤ 2.5 kV |
| Voltage protection level Up (N-PE) | ≤ 1.5 kV |
| Residual voltage Ures (L-N) | ≤ 1.5 kV (at In) |
| ≤ 1.3 kV (at 12.5 kA) | |
| ≤ 1.1 kV (at 5 kA) | |
| ≤ 1 kV (at 2.5 kA) | |
| Residual voltage Ures (L-PE) | ≤ 1.7 kV (at In) |
| ≤ 1.5 kV (at 12.5 kA) | |
| ≤ 1.3 kV (at 5 kA) | |
| ≤ 1.2 kV (at 2.5 kA) | |
| Residual voltage Ures (N-PE) | ≤ 1.5 kV (at In) |
| ≤ 1.3 kV (at 50 kA) | |
| ≤ 1.1 kV (at 20 kA) | |
| ≤ 1 kV (at 10 kA) | |
| TOV behavior at UT (L-N) | 457 V AC (5 s / withstand mode) |
| 457 V AC (120 min / withstand mode) | |
| TOV behavior at UT (N-PE) | 1200 V AC (200 ms / withstand mode) |
| Response time tA | ≤ 100 ns |
| Max. backup fuse with V-type through wiring | 80 A (gG) |
| Max. backup fuse with branch wiring | 315 A (gG) |
| Ambient conditions | |
| Degree of protection | IP20 (Installed) |
| Ambient temperature (operation) | -40 °C ... 85 °C |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Altitude | ≤ 5000 m |
| Permissible humidity (operation) | 5 % ... 95 % |
| Shock (operation) | 2g (Half-sine / 11 ms / 3x ±X, ±Y, ±Z) |
| Vibration (operation) | 0,5g (9 … 200 Hz / 2.5 h / X, Y, Z) |
| Standards/specifications | IEC 61643-11 |
| Note | 2011 |
| Standards/specifications | EN 61643-11 |
| Note | 2012 |
| Mounting type | DIN rail: 35 mm |
Your advantages
Safe operation and maximum system availability, thanks to reliable protection in the event of lightning current and surge voltages using innovative high-performance spark gap technology
Maximum performance in the smallest installation space for all common power supply systems
Suitable for use in the unmetered area, thanks to a protective circuit free of leakage current, and to a mechanical visual status indicator
Space-saving and inexpensive installation, thanks to the slim overall width
Informed at all times about the function of the protective effect, thanks to clear green/red indicator and optional remote indication contact